public void TestEncryptStreamAsyncValidatesSourceStreamNotNull()
{
ValeoInterviewChallenge.CryptographyService.XorCryptographyService xorCryptographyService = new ValeoInterviewChallenge.CryptographyService.XorCryptographyService();
using (var target = new MemoryStream())
{
//unfortunately this test is failing, because async methods are not supported by Assert.ThrowsException
Assert.ThrowsException <ArgumentNullException>(async() => await xorCryptographyService.EncryptStreamAsync(null, target, "aaa", null));
}
}
public async Task TestFileEncryptionAndDecryption()
{
string sourceText = "01234567989";
using (MemoryStream sourceStream = new MemoryStream(Encoding.UTF8.GetBytes(sourceText)))
{
using (MemoryStream targetStream = new MemoryStream())
{
using (MemoryStream targetValidationStream = new MemoryStream())
{
string passPhrase = "01234567";
ValeoInterviewChallenge.CryptographyService.XorCryptographyService xorCryptographyService = new ValeoInterviewChallenge.CryptographyService.XorCryptographyService();
await xorCryptographyService.EncryptStreamAsync(sourceStream, targetStream, passPhrase, null);
Assert.AreEqual(sourceStream.Length, targetStream.Length);
targetStream.Position = 0;
await xorCryptographyService.DecryptStreamAsync(targetStream, targetValidationStream, passPhrase, null);
Assert.AreEqual(sourceStream.Length, targetValidationStream.Length);
targetValidationStream.Position = 0;
StreamReader streamReader = new StreamReader(targetValidationStream);
Assert.AreEqual(sourceText, streamReader.ReadToEnd());
}
}
}
}
